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L. A. KRUPP.

CONCRETE BREAKING MACHSNE.

APPLICATION FILED APR.19. 1920.

1 ,38 1 3 1 Patented June 14, 1921.

3 SHEETS -SHEET INYENTUR wa. MQW

L A- KRU'PP.

CONCRETE BREAKING MACHINE.

APPLICATION man APR. 19. 1920. 1,381 Patented June 14, 1921.

3 SHEETSSHEET 2.

Immwa L "A. KRUPP.

CONCRETE BREAKING MACHINE.

APPLICATION FILED APR. 19, 192.0.

Patented June 14, 1921- 3 SHEETS-SHEET 3- sierra star LEO A. 31112301FINDLAY, 02110, 'essienoiaro 'T'HE BIVFCKEYEY c nnamon meme,

COMPANY, or rrnntar, 01-110, A oonronnr on or 01-110..

i CONC ETE-BREAKING- iviAcnrnn.

It '0 all to ham it may concern:

Be it known that I, LE0 A. KRUrP, a citizen of the United States, and aresident of Findlay, in the county of Hancock and State of Ohio, made anInvention Appeie taming to Concrete-Breaking Machines; and.

I do hereby oeclare the following to be a full, clear, and exactdescription'of the invention, such as will enable others skilled in theart to which :it appertains' to make and use the same, reference beinghad to'the accompanying drawings, and to the characters of-referencemarked thereon, which form a part of this specification. i

This invention relates t-o'--n1achi1ies'forv breaking concrete or thelike, and is particularly intended for use in breaking up concretepavements preparatory to repairing, trench work, or other purposes. e

The object of my invention is the provision of a portable machine of theclass described,having a drop hammer or weight adjustable to strike alight or heavy blow and also adjustable crosswise of the machine, or ofthe path of travel, to break'a path of concrete of any width up to thelimit 'ofthe machine, thereby adapting it for use in ing and trench workis diflicult and expensive. equally well for tamplng purposes.

Further objects and advantages of the V 21 of any suitable construction.

inve'ntion'will be apparent from the following detailed descriptionthereof.

While the invention, in its broader aspect,

is capable of embodiment in numerous forms, a preferred embodimentthereof-is illustrated in the accompanying drawings,

in which,-

Figure 1 is a side elevation of a machine 2, 2 of the'caterpillar'type,and in front by a pair of steering wheels 8, 3,in any suitableSpecification of Letters Patent.

The machine may also be used transversely of'the frame 1 between said11pdesignates Patented eiiineilet, 1%21.

Application filed. Apr'il 19, 1920. Serial amnesia. I

manner. An engine a is carried by the frame at its forward end and hasdriving connections 5- with' a'reverse gear transmissionmechanisminclosed within a case 6 andv controlled from a handle 7 (Fig. 1).through a shaft 8. The transmission neclianism has chain and sprocketwheel-connection witha;

shaft 10 journaled' transversely in the frame' Thexhigh speed"connection is through a clutch controlled pinion on the shaft 10 and ameshing gear 13 forming part of a differential gearing on the ack-shaft11. 1X

clutch iron the Shaft 10 is movable into and g out of engagement withthe pinion 1E2. 1

chainand sprocket wheel connection 15 between the shaft 10 and ajack-shaft 16 ,'and

the shaft 16 has a pinion 1'? in mesh with V the differential gear'13and shiftable into and out of engagement therewith. The differentialshaft 11 has driving chain and low speed drive is through a clutchcontrolled sprocket wheel connection 18 at each end with therespectivecaterpillarwheel 2. I

The frame 1 is provided at its rear end i I with a pluralityof'transvei'sely spaced up-i rights 19 and at: the rear thereof at eachend with an upright-20 all suitably tied together and forming a tower.This tower is braced with respect to tlieframe 1 and the members thereofrigidly connected by a frame-work" A'earriage orzguide frame' 22 inwhich ja weight 23 is vertically movable is suspended from the topportion of the tower between the two uprights 20 thereof and isshiftable rights. -The. carriage comprises four corner upright-s22 ofangle-iron arranged in rectangular form and tiedtogether by top andbottom connecting members 24. Thecar riage is provided at its top withtwo sets of double'over-head track rollers 25, which travel onr'espective horizontal flang s ofiai track rail'26 connecting theuprights 20 at f the top of the tower, as best shown in'Figs.

321M143 v H v 7 Two cross-beams 27' are provided on the carriage 22atthe inner side of its top portion in slightly verticallySPELCBChI'BliLtiOIi, and between theseateach end is mounted a roller 28for bearing-forwardly"against a track rail 81 mounted on'the frame 1cross wise thereof at the baseof the tower. It is thus evident that thguide frame 22is car ried by the tower and frame 1 for free movementtransversely thereof throughout the width of the frame.

A squared shaft ends to hearing brackets wiprojectingrearward from theupper end portions of the tower uprights 20. The squared portion extends through a bush ngfic, which is ournaled at its ends in bearings 35on the outer side of the upper end portion ofthe guide A 22, and alsohas a sprocket wheel 36 firiei to each endthereof without the carriag'ewhereby the bushing and sprocket wheels are caused to turn with theshaft and are permitted to have movements longitudinallythereof with thecarriage.

The carriage 22 is provided at the outer side of its lower end portionwith a bearing bracket. 37 in which a cross shaft 38, carryir asprocket-wheel 39 at each end thereo .without the guide frame, isjournaled. A sprocket-chain 40 connects the sprocket wheels 86 and 39 ateach side of the guide frame, with the inner-length of each chainparallel with and adjacent to the cross vertical center line of thecarriage.

The chains providedat intervals with hooks 41 arranged in horizontallyalined pairs on the two chains and associated with each hook a controlarm projecting inwardly fromthe chain and a short arm movable across theto eject therefrom an article which elevated by the hook during theupward inner course of movement of the chain. I l

[lheweioht 23 is provided'at its upper end with a short cross-shaft 4 .3to which the lower end of a rocker arm 44 is pivoted for VP the frame.lhis armis, provided at'its er end with a cross shaft 4-5. the ends of.hich pro ect into positionat the forward side of the upper length ofeach chain do to engaged by the hooks 41 in their upward movement wlththe chain so that the m ni and connected weight are elevated by tiechain. The 44: is weighted at its en angled trip lever i 2havingc Ticalrocking movements longitudinally moved into engagement with respectivetrip members 41-? disposed in the path of movement thereof and will bemoved to eject the V the medium of a fluid cushion connection. 32extends crosswise of; the uppei." portion of the tower at the outer sideof the carriage 22, being journaled' at its \e i. thereof. A clampingstrip 51 V l} is disposed at the inner side of the cross-hm 50 and thetwo are drawn together 1n bin j relation to adjoining flanges of a pairor uprights 2.2 of. the carriage by a hen d-screw 52.

"ifhe squared shaft which drives the weight ele'vatin chains 4O, 40, hassprocket wheel 53 on one end, which is connected by a sprocket chain toa drive sprocketwhcel 55 on the outer end of the shaft 10 the sprocketwheel being'much smaller than thesproclrct wheel 53 to reduce the speedof 52; of the shaft 82 relative to the shaft in. The sprocket wheel isloose on the v 10 and is engaged with the shaft by a able clutch member56, which is splined o the shaft and has its shifting movementscontrolled by any suitable means not shown.

The sleeve he upper end of the carriage 22 has a. ratchet wheel 57 fixedthereto to turn with the shaft 32 and this ratchet wheel is connected bya hook pawl 58 to prevents back tm'nin jf of the shaft 32 when thesprocket wheel 55 is disconnected from the shaft 10. This enables theweight to be held in elevated position by the elevating m rs during themoving of the machine fr a place to another.

The shifting V of the carriage 22 transversely of the machine iseffected by the v movement of endless chain 59 which eX- tendscrosswiseof the tower and is guided at its code around sprocket-wheels'60 carried by horizontal shafts 6%., which itl'Cj0H1- na-ledlengthwiseof the frame in hearings provided on the uprights 19 and 20 ateach side of the tower. The chain 559 has one length thereof connectedto'the' carriage 22 through the medium of a U-boltand crossbar fixed tothe inner side of the carriage frame. One ofthe' shafts 61 hassprocketwheel fixed to its forward end and con 'nected hya sprocketchain 64: to a smaller sprocket wheel 65 on a shaft 66 ournaled in therear end portion ofthe frame 1 longitudinally thereof. The shaft carriestwo loose bevel gearsta' each'inmesh with a bevel-gear 68 on theforward'end :of the shaft 66 at opposite sides of'its axis. A

7 clutch member 69 is feathered on the shaftj tor efiects a forw ard orreverse running of 10 intermediate the gears 67, 67 and is shiftableinto engagement with either to cause a driving of the shaft 66 in onedirection or the other from the shaft 10 and to impart a correspondingmovement of the carriage 22 crosswise of the frame.

The operation lows: I

The engine being in operation the operathe 'inachine by throwing thecontrol lever 7 7 into one or the other'of its positions, and he alsocontrols thespeed of movement of-the machine by throwing the clutch 7Oon'the shaft lO-into engagement with thec'onnection 15 so'that thedriving is through the shaft 16, pinion 17, differential gearing 13,

shaft 11 and connections l8 with the' cater-' pillar wheels. To obtainthe high speed running of the machine, the clutch 14 on the shaft 10 isthrown into engagement with the pinion 12-thereby effecting a driving ofthe differential gearing; To effect a driving of the weight elevatingchains 40 the clutch 56 on the shaft 10 is thrown into engagement withthe sprocket wheel 55, which is connected to and drivesthe squared shaft32' through the sprocket chain 54 and wheel 53. The continuous andconstant speed movement which is imparted to the chains 40 successivelybrings pairs of hooks 41 thereon into picking-up engagement with thecrossarm'or shaft 45 of the weight so that the weight is successivelyraised by each engaging pair of hooks until the trip levers 42 inassociation with the hooks move into triping connection with the weight23.

ping engagement with the trip members 47 on the cross-bar50, fixed tothe carriage frame 22 and are moved thereby to eject or swing the shaft45 out of engagement with the hooks, which permits the weight to dropand break any concrete or other breakable means within its path ofmovement. After the cross-shaft 45 has passed from engagement with apair of elevating hooks 21 it is [caused to swing back to its normalupright .of my machine is as folof the claims.

with thereby effecting a driving of the chain 59 through the shaft 66,chain 64, sprocket wheel-63and*shaft 61; This transverse ad-' justmentof the carriage may be effectedf either-when the machine is at rest orin movement and during a 'drlving of the weight elevating chains 40V orwhen said chains areat rest. It is thus evident that I have provided. amachine for breaking-up concrete-pavements or the like which may be inthe limits of length. r c

1' wish itunderstood thatmy invention is not limited to any specificconstruction, are

operated to brear a path'of any width with-- the machine and of, any

rangement or form of the parts, as it is capable of numerousmodifications and changes, without 'Having thus' described a myinvention,

departing from the v spirit, 3

what Iclaim as new-,xand desire'to secure 7 v byLettersflPatent, ,is,:-1

1; In a machine of-cthe class described, a

portable framehaving a tower at :one end, a carriage carriedforflhorizontal adjustment by the tower and forming averticah' guide,"-aweight guided for movement by the carriage, an elevating chainassociated with the carriage for movement therewith and having a lengthextending longitudinally of the carriage, said chain having a hook,means movably carried by'the weight and adapted to be engaged by thechain hook to cause an elevation of the, weight by the chain, and meansautomatically operable to releasev the hook engaging means from the hookto permit'a dropplng of the weight when elevated a predetermined height.

2. In a machine of the class described, a

portable frame having a tower,- a carriage carried for horizontaladjustment by the vtower, means operable to adjust the carriage, aweight guided for vertical movements by the carriage and having atrans-V versely movable member at its top, means operable tointermittently engage the weight member and elevate it, andmeansautomatically operable to release the weightmember 7 from the elevatingmeanswhen at a predetermined height in its movement and to permit adropping of the weight and member, said releasing means beingadjustably' carried by the carriage to vary the heightat which theweight is released.

3. In a machine of the class described, a portable frame, a shafttherein, a carriage shiftable longitudinally of said shaft and forming aVertical guide, a weight movable in said carriage, a catch arm pivotedto the upper end of the weight for vertical swinging movements andnormally standing in one position of its movement, an elevating chainmovable with the carriage and driven by said shaft and having an upwardcourse of movement lengthwise of the carriage,

a movement of the catch arm with the chain to disengage the connectiontherebetween.

4. In a machine of the class described, a

portable frame, a horizontal shaft journaled therein, a carriage movablelengthwise of the shaft and forming a verticalguide, a weight movable insaid guide and having catch means at its top, means operable by theshaft for periodically engaging the weight means and elevating thewelght, and means automatically operable to disengage the elevatingmeans and weight means at a predeterminedpoint in an elevation of the.

weight to permit a dropping ofthe latter.

5. In a machine of the class described, a portable frame,-a horizontalshaft mounted in said frame, means for driving said shaft, a carriagecarried by the-frame for shifting movements lengthwise of the. shaft andforming a vertical guide, a weight movable in said guide, chains guidedfor movement lengthwise of the carriage and driven by the shaft andoperable to intermittently en.-

gage and elevate the weight from lowered position, and meansautomatically operable to release the engagement between the chains andweight at a predetermined point in an elevation of the latter.

6.111 a machine of the classjdescribed, a portable frame havingvertically spaced horizontal tracks, a carriage having guide means fortraversing said tracks to support the carriage in the frame, a weightguided for vertical movements by said carriage, ashaft journaled in theframe longitudinally of the line of movement of the carriage in theframe, elevating means movable with the carriage andoperable by theshaft to intermittently engage and elevate the weight, meansautomatically operable torelease the weight from the elevating means ata-pre-- determined point in an elevation of the weight, a source ofpower on the frame, and means selectivelyoperable 'to connect thepowerto said shaft to drive it and to connect the power to the carriageto' shift the same in the frame. a

*n testimony whereof I have hereunto signed my name to thisspecification.

' LEO A. KRUPP.

